After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome

2026-04-01: After 1.7.x, 1.8.x release builds need tests and feedback: https://forum.uvnc.com/viewtopic.php?t=38158

2026-03-11: CVE-2026-3787 and CVE-2026-4962 - Clarification: https://forum.uvnc.com/viewtopic.php?t=38155

2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page

2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078

2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864

Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome

Help is very needed for:
Windows ARM/ARM64 support: https://forum.uvnc.com/viewtopic.php?t=38163 / https://github.com/ultravnc/UltraVNC/issues/346
macOS support: https://forum.uvnc.com/viewtopic.php?t=38164 / https://github.com/ultravnc/UltraVNC/issues/347
Linux support: https://forum.uvnc.com/viewtopic.php?t=38165 / https://github.com/ultravnc/UltraVNC/issues/348
*BSD support: https://forum.uvnc.com/viewtopic.php?t=38166 / https://github.com/ultravnc/UltraVNC/issues/349
*Solaris support: https://forum.uvnc.com/viewtopic.php?t=38167 / https://github.com/ultravnc/UltraVNC/issues/350

Positioning problems

Here you will find help for frequently asked questions as well as for your specific question
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Amcor_SST
Posts: 2
Joined: 2022-09-12 08:38

Positioning problems

Post by Amcor_SST »

We tried to fix the window with the following command line:

Code: Select all

vncviewer -password PRUEF /viewonly /notoolbar /-position:-300 1 1080 1920 /connect 172.16.1.224
The only thing we found out is that the IP address has to be at the end in order to even get a connection.
The command given "-position X Y W H" in the instructions does not work. The numbers can be changed, the display position does not change.
May someone can help us.

regards Amcor
Rudi De Vos
Admin & Developer
Admin & Developer
Posts: 7021
Joined: 2004-04-23 10:21
Contact:

Re: Positioning problems

Post by Rudi De Vos »

Code: Select all

vncviewer localhost -password somepass -position 100 100 500 500
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- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
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Amcor_SST
Posts: 2
Joined: 2022-09-12 08:38

Re: Positioning problems

Post by Amcor_SST »

"-position" doesn´t work by us:

It opens a window in middle of screen:

Code: Select all

vncviewer -password wrong -position 100 100 500 500 172.16.7.22
It opens a window in middle of screen in same size:

Code: Select all

vncviewer password wrong -position 300 300 200 200 172.16.7.22
It opens a error window: "authentication rejected":

Code: Select all

vncviewer 172.16.7.22 -password wrong -position 100 100 500 500
Option works:

Code: Select all

-fullscreen
Option works:

Code: Select all

-password password
Option works:

Code: Select all

-no toolbar
We use UltraVNC 1.2.0.5, we also try UltraVNC 1.3.8.1 on Windows 10 Pro
Rudi De Vos
Admin & Developer
Admin & Developer
Posts: 7021
Joined: 2004-04-23 10:21
Contact:

Re: Positioning problems

Post by Rudi De Vos »

UltraVNC Viewer 1.2.0.5 does not have the parameter position, minimum is 1.3.x.

Retested UltraVNC Viewer 1.3.8.1 with UltraVNC Server 1.2.0.5:

Code: Select all

vncviewer localhost -password xxx -position 500 0 500 500 & vncviewer localhost -password xxx -position 0 0 500 500 &
This opens 2 viewers at 0,0 and 500, 0
UltraVNC links (join us on social networks):
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
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